Mexico City's water system is fragile, because the growth of the population has put a heavy burden on the underground aquifer that feeds the city. So some entrepreneurs have devised a system to collect and store rain water, to keep houses supplied.

Faced with chronic water shortages, many residents of Mexico City aren't wafting for the city government to fix things. They're turning to the sky. Ari Daniel Shapiro reports on the growing practice of rainwater harvesting.

Faced with chronic water shortages, many residents of Mexico City aren't wafting for the city government to fix things. They're turning to the sky. Ari Daniel Shapiro reports on the growing practice of rainwater harvesting.

Mexico City's water system is fragile, because the growth of the population has put a heavy burden on the underground aquifer that feeds the city. So some entrepreneurs have devised a system to collect and store rain water, to keep houses supplied.

Faced with chronic water shortages, many residents of Mexico City aren't wafting for the city government to fix things. They're turning to the sky. Ari Daniel Shapiro reports on the growing practice of rainwater harvesting.

Mexico City's water system is fragile, because the growth of the population has put a heavy burden on the underground aquifer that feeds the city. So some entrepreneurs have devised a system to collect and store rain water, to keep houses supplied.